Sorry guys, just catching up. Sorry to hear this! Any chance you can email me personally? I am sorry you’ve not been responded to. What address are you sending it to?
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It’s @ccyun051 who is in need of the help, fyi.
@ccyun051: ^^^ message from Paul likely intended for you, fyi.
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Hi Paul,
I am in touch with Spencer at PSA and I am going to do little trouble shooting that he asked me to run. Thanks
Chris
Here is an update. I have been troubleshooting past 2 hours, swapping all the cables and tubes. So far the cause of the problem might be a “bad” tube. It was a brand new preamp tube (gold lion from Upscale Audio) I bought immediately after the problem was noted. As I wrote earlier, the amp functioned fined for a few days with new tubes until it didn’t. When I shipped the amp to PSA, I swapped it out with one the original Psvane tubes thinking that I should keep the new pair together. So when I received the amp it had a Savane tube and when I turned the amp on, it gave out high pitched background noise but no popping noise. Its odd since I don’t remember high pitched noise from the tube before. Then I swapped it out with the GL which had less than 10 hours. Lots of static noise and a loud pop when my BHK preamp on. Only now I found out the noise come from the tube. However, I found it odd since the tube was literally new and was fine before. Could it be that the tube was damaged when the amp had the problem. I had tube systems for more than 10 years but never had a tube damaged because the audio equipment malfunctioned. In fact I never had audio equipment malfunctioned on me. Btw PSA changed the entire input module and burned the amp before shipping it back to me. So I am currently using an unbalanced set of GL tubes but at least no loud background noise.
In my opinion what you are seeing is a small minority of the user base who have either an equipment or customer service issue. But, I know for a fact that if you “@jamesh” you are going to get world-class service.
You are also seeing a few people, including myself, helping people with configuration issues. Almost everyone has a different system and sometimes it takes a few of us to determine what could be going on with someone’s system. A bad tube, a setting in an SACD player, out of phase power, a blown fuse, etc… Since we are an international group, there’s a good chance there’s someone noodling about someone else’s problem 24x7x365. How’s that for a help desk?
A good bit of what you’ll read here is from tweakers (tuners). People who are willing to dork around with fuses, shielding, cabling, transformers, capacitors, power supplies, etc… to see if they can squeeze out even more performance (including me). All harmless fun. There’s plenty of comradery to be found along the way. We also have the good fortune to have @Elk to keep us from ourselves 
Really the biggest problem I see here on the forum is convincing @luca.pelliccioli to buy headphones. 
(I had to fit that in somewhere Luca!).
The gear out of the factory is excellent. There’s years of attestation in this forum to satisfy even the most skeptical.
Regards,
Vince
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I agree with Vince, this forum and a few members helped me during last 2 years growing my knowledge, solving issues and experimenting tweaks.
A precious resource indeed, along with a very reactive customer service from PS Audio, often by Paul himself.
Yes I had issues sometimes (SPP and BHK Pre, never with M1200s though) and always had them fixed thanks to James and others in Boulder. Please take duly note that I live on the other side of the Ocean and always had speed answers and support.
Just my experience, hope that helps.
PS: I’m pretty sure sooner or later I purchase also a headphone rig…
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Great. Spencer’s a good guy. Let us know if there’s anything you need. We are here to help.
Thanks Vince, I appreciate it. There was a pattern of some emails being unanswered within the expected time frame but that pattern/problem has recently been understood and solved. Folks can always feel free to DM me and I will get back to them promptly.
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There’s a lot to like in this post. But since you’re only allowed one, 
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Thanks Allan, I appreciate it.
Hello,
I just came across this thread as I had almost the exact issue as Chris. Bad m1200 and noise from amp when returned. Figured it’s the tube and have 2 matched pairs 0n order from eBay as PS audio doesn’t have any on sale any longer.
Hope it fixes the high pitch I’m now getting from the newly repaired unit.
I also agree this is probably not what I consider first class service as they sent back a unit damaged from what I perceived is a tube issue.
Really PS Audio you can’t supply new tubes? Frustrating to say the least.
Hi Keith, welcome to the forum. It’s a bummer that this is your first post.
What was the reason you returned the amp in the first place?
Also since you are new you can’t PM @jamesh yet, there’s some rules around what you can do the first few days with a new account, but you can email him at: jamesh@psaudio.com.
If anyone can help you, it’s James.
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Hey there,
The amp would not go out of fail safe mode, i.e. the power light kept flashing.
Now it just makes noise but is high pitched but I can detect even with music running through it.
Yes, James was the man who give me the RMA number to return it for repair, thanks.
Hi Keith, I still cannot not figure out why the tube that came back with the amp generated high pitched background noise. I was told that the tube was replaced by PSA and yet I could hear high pitched noise from 3 ft away. Bad tube? Damaged during shipping? Give a call to PSA. Unlike many other companies, PSA actually answer your call.
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Thanks Chris, I just may do that. Seems odd but I tried multiple things and do have an extra set of cheap tubes, but getting them in is a hassle.
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Let me know if the different tube does the trick. When it left here the techs said it was working well.
Yes, replacing the psvane tube that came with the amp with a GL tube eliminated the high pitched noise. Regardless, M1200 is very sensitive to tubes and vice versa.
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Yes, Morris from PS Audio helped me and a new tube fixed the issue. But the left channel is louder and tinnier. Argh!
Thanks much though. Sensitive units to say the least.
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Generally speaking, I would only replace both tubes at the same time and I’d make a point to buy a matched pair.
That should have the two units at similar gain levels and sound quality.
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Thanks for reply already have a matched pair from PS Audio and is much better.
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